ML19320D045
| ML19320D045 | |
| Person / Time | |
|---|---|
| Issue date: | 06/11/1980 |
| From: | Eisenhut D Office of Nuclear Reactor Regulation |
| To: | Lainas G, Novak T Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19320D046 | List: |
| References | |
| NUDOCS 8007180471 | |
| Download: ML19320D045 (1) | |
Text
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MEMORANDUM FOR: Thomas M. Novak, Assistant Director for Operating Reactors Division of Licensing, NRR Gus C. Lainas, Assista.2 Director for Di A b b ^of* E nSkng, NRR FROM:
Darrell G. Eisenhut, Director Division of Licensing, NRR
SUBJECT:
GENERIC LETTER CONCERNING DECAY HEAT REMOYAL CAPABILITY
' Attached is a generic letter to all operating PWR's which requests licensees to amend the Technical Specifications (TS) for their facilities concerning decay heat removal capability. Also attached are model TSs for each of the three PWR vendor types of plants. The letter, with the appropriate version of the model TSs should be sent to licensees by each Operating Reactor Branch within the next week.
The estimated total manpower expendituresfor review of submitted TSs is 0.1 manyear per reactor site or about 5.0 manyears. The lead engineer assigned is Daniel Garner, Boom 334, ext. 27435) He will initiate TACS for all facilities and will fonsard sheets to the Project Managers for completion.
Orf ginal Signed By Darrell G. Eisenhut. Director Division of Licensing, NRR Attachments: As stated ab
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J TO ALL OPERATING PRESSURIZED WATER REACTORS (PWR'S)
Gentlemen:
This letter transmit the request that you amend the Technical Specifications (TSs) for your facility with respect to recctor decay heat removal capability.
The basis for our request is founded in a ntsaber of events that have occurred at operating PWR facilities where decay heat removal capability has been seriously degraded due to inadequate adninistrative controls utilized when the plants wre in shutdown modes of operation. One of these events occurred at the Davis-Besse Unit No.1 plant on April 19, 1980, which was described in IE Infomation Notice 80-20 dated May 8,1980.
In IE Bulletin 80-12 dated May 9,1980, you were requested to inuediately implement administrative con-trols which would ensure that proper means are available to provide redundant methods of decay heat removal. While the function of the bulletin was to effect inanediate action with regard to this problem, we consider it necessary that an amendment of your license be made to provide for pennenent long tem assurance that redundancy in decay heat removal capability will be raintained.
You are requested to propose TS changes for your facility that provide for redundancy in decay heat recaval capability for your plant (s) in all modes of operation. To assist you in preparing your submittal, we have enclosed a copy of Model TSs which would provide an acceptable resot6 tion of our concern. Your proposal should use the enclosure as a guide and should include an appropriate Safety Analysis as a basis.
It is requested that you submit your proposed TSs with the basis within 120 days of receipt of this letter. If you have any questions about this matter, please contact your Prcject Manager.
Sincerely, Darrell G. Eisenhut, Director Division of Licensing
Enclosure:
Model TSs concerning Decay Heat Removal Capability 8007180 $7#I O FFIC E SURNAME DATEk..
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g June 11, 1980 MEMORAflDUM FOR: Tho' mas M. Novak, Assistant Director for Operating Reactors Division of License, NRR Gus C. Lainas, Assistant Director for Safety Assessment Division of Licensing, NRR FROM:
Darrell G. Eisenhut, Director Division of Licensing, NRR
SUBJECT:
GENERIC LETTER CONCERNING DECAY HEAT REMOVAL CAPABILITY Attached is a generic letter to all operating PWR's which requests licensees to amend the Technical Specifications (TS) for their facilities concerning decay heat removal capability. Also attached are model TSs for each of the three PWR vendor types of plants. The letter, with the appropriata version of the model TSs should be sent to licensees by each Operating Reactor Branch within the next week.
The estimated total manpower expenditure for review of submitted TSs is 0.1 manyear per reactor site or about 5.0 ranyears. The lead engineer assigned is Daniel Garner, (Room 334, ext. 27435). He will initiate TACS for all facilities and will forward sheets to he Project Managers for completion.
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.%~f June 11, 1980 TO ALL OPERATING PRESSURIZED WATER REACTORS (PWR'S)
Gentlemen:
This letter transmits the request that you amend the Technical Specification?
(TSs) for your facility with respect to reactor decay heat removal capability.
The basis for our request is founded in a number of events that have occurred at operating PWR facilities where decay heat removal capability has been seriously degraded due to inadequate administrative controls utilized when the plants were in shutdown modes of operation. One of these events occurred at the Cavis-Besse, Unit No. I plant on April 19, 1980, which was described in IE Information Notice 80-20 dated May 8,1980.
In IE Bulletin 80-12 dated May 9,1980, you were requested to immediately implement administrative con-trols which would ensure that proper means are available to provide redundant methods of decay heat removal. While the function of the bulletin was to effect immeciate action with regard to this problem, we consider it necessary that an amendment of your license be made to provide for permanent lcng term assurance that redundancy in decay heat removal capability will be maintained.
You are requested to propose TS changes for your facility that provide for redundancy in decay heat removal capability for your plant (s) in all modes of operation. To assist you in preparing your submittal, w? have enclosed a copy of Model TSs which would,rovide an acceptable resolution of our concern. Your proposal should use the enclosure as a guide and should include an appropriate Safety Analysis as a basis.
It is requested that you submit your proposed TSs with the basis within 120 days of receipt of this letter.
If you have any questions about this matter, please contact your Project Manager.
Sincerely, I
r Cg DarrellG.E(se'nhtd r
Division of Licensing
Enclosure:
Model TSs concerning Decay Heat Removal Capability